Collector-ring and clamping-plate.



G. H. SMOOT & H. HERTZ. GOLLBCTOR RING- AND GLAMPING PLATE.

APPLICATION FILED MR2, 1906.

91 1,081. Patented F6112, 190-.

1270622 Kora;

. stood by reference to the UNITED STATES PATENT ossrcn.

CHARLES H SMOOT AND HJALMAR HERTZ, OF CHICAGO, ILLINOIS, ASSIGNORS TOWESTERN ELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

COLLECTOR-RING AND GLAMPING-PLATE.

Specification of Letters Patent.

Patented Feb. 2, 1909.

To all whom it may concern: 4

Be it known that we, CHARLES H. SMoo'r and I'IJALMAR Hnn'rz, citizens ofthe United .States, residing at Chicago, in the county. of

Cook and State of Illi ois, have invented a certain new. and usefulmproveinent in C01- lector-Rings and Clamfin -Plates, of which thefollowing is a ful', cl ar, concise, and exact description.

Our invention relates to a rotor for dynamo-electric machines, and isapplicable more particularly to rotating field ma nets of alternatingcurrent generators 0% the high speed type.

The object of our invention is to provide a simple and compact structurepossessing the requisite strength to Withstand the strain to which highspeed rotors are subjected.

In our invention clamping plates at the end of the rotor constituteterminals for the field winding, and also rovide.a contact surface forthe collector rushes. In carrying out our invention we preferablyprovide a rotor with an iron core built up of disks mounted on a shaft,the conductors being heavy metallic bars embedded therein. The andconnections between the several conductors are formed by disks assembledupon the shaft .at the ends of the core, said disks being insulated fromeach other and from all the conductors except those to which they areimmediately connected. Such a construction is described in detail in anapplication of Charles H. Smoot, Serial No. 294,044 filed January 21906.

Ourinvention may be more readily underaccompanying drawings, in which YFigure 1 is a fragmentary longitudinal section of' a rotor embodying ourinvention, showing core; Flg. 2 is an end elevation of-a clamping plate;Fig. 3 is a detail side elevation, partly 1n section, of a clampingplate forming the ends of the cylindrical portion of the rotor; and Fig.4 is a simplified diagtllam illustratinga method of winding whie mabeemplayed, and for sake of clearness s owinga windin placed m each slotof the rotor.

Similar letters of reference refer to similar parts throughouttheseveral views.

Upon the shaft A of the rotary member is mounted a core'B. Theconductors C of the field winding are embedded inthis core near ceivlnthree conductors in each slot of thein which only one conductor is pwinding, of end disks or its surface, extending longitudinally thereofin. slots of a size to receive said conductors. Said core is of a wellknown construction, being built up of a series of soft ironlaininae ordisks. There may be one or more conductors go in each slot, as may bedeemed desirable.

At each end of the cylindrical core Bare a number of disks D insulatedfrom the core and from each other. These disks are 336 sembled upon theshaft of the rotor at each end of the core and are held in place byclamping'plates E and E. Each clam in plate may be held imposition onthe she t y means of a clamping nut F, as shown in Fig. 1. All of thesedisks except the two at the extreme end of the rotor, designated d, dare provided with slots for the purpose of re such of the conductors asextend theret rough. Each conductor is insulated from all the disksexcdpt the one at each end 76 to'which it is riveted -r otherwisesecured. Electrical connection is made from one conductor to the nextthrough a disk, the conductors being thus arranged in series with eachother. The windings finally terminate 8 0 in the outermost disks (1 andd at the ends of the rotor. Clamping disks or plates E and E areassembled u on the shaft of the rotor outside the termina disks d and d,and make contact-res )ectively with said terminal disks. as The end atesE and E are each rovided with a hu or ring 0 and e respective y, formingsurfaces upon which the collector brushes and f are adapted to beartoconvey current to and from the winding. In order to more. readilradiate heat, the clamping plates E an E may be provided with radiagrooves g, g, on their outer faces. I 7

While the particular method of winding constitutes no part of ourpresent invention, we preferab? employ that shown intpe a plication oHjalmar Hertz, Sena 0. 294,046, filedJanuary 2, 1906, in which abalanced and symmetrical structure is pro vided. Y

Having thus described our invention, we claim.

1. in a d namo-electric machine, the cornbination with a rotati fieldmagnet and its the terminals of said field winding and c limping plateshaving electrical connection with sat erminal disks'and roviding acontact surface for collectorbrus es.

2. A rotor for dynamo-electric machines 11 o-= com rising a cylindricalcore, conductors exten ing longitudinally of the core, cylindrical endmembers composed of disks for connecting said conductors in series, theexternal disks forming the terminals of the series, and clamping platesabutting against I said external disks and provided with conlector ringsformed integral with said clamp' ing plates.

4. In a turbo enerator, the combination with a rotating" eld magnet, ofend disks forming the terminalsof the field winding, end clamping plateshaving electrical connection with said terminals, said plates havinradial rooves on their outer faces, and c0 lector rings integral withsaid clamping plates.

5. A rotor for dynamo-electric machines comprising a laminated core, awinding for said core made up of ion itudinal bars, and connector disksat the on of the core uniting said bars in series to form a fieldwinding, and heavy clamping rings outside said con nectordisks atopposite ends of the rotor, havin contact surfaces for brushes, saidrings Forming the electrical terminals of said winding. A

In Witness whereof, we hereunto subscribe our names this 26th day, ofDecember, A. 1)., 1905.

; Gnomm E. Four, HENRY H. WAIT.

